Dust separator and collector.



No. 775,664. PATENTED NOV. 22, 1904.

G. MOVBETY.

DUST SBPARATOR AND COLLECTOR.

APPLICATION FILED DEC. 4, 1903.

y NO MODEL. 2 SHEETS-SHEET 1.

WW, I WZQ M46. Wig/L hat/M No. 775,664. PATENTED NOV. 22, 1904. o.MQVEETY. DUST SEPARATOR AND COLLECTOR.

' APPLICATION FILED DEC. 4, 1903.

N0 MODEL. 2 SHEETSSHEBT 2.

7 QVahuzopeo attozmu UNITED STATES Patented November 22, 1904.

PATENT OEEicE,

CHARLES MOVEETY, OF OHELTENHAM, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TOJOHN F. FORD, OF PHILADELPHIA, PENNSYLVANIA.

DUST SEPARATOR AND COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 775,664, dated November22, 1904.

Applicatio file December 4, 1903. Serial No. 183,769. (No model.)

To all whom it may concern:

Be it known that LCHARLEs MOVEETY, a citizen of the United States,residing at Cheltenham, in the county of Montgomery and State ofPennsylvania, have invented certain new and useful Improvements in DustSeparators and Collectors, of which the following is a specification.

My invention relates to an improvement in dust separators or collectors.

The object of the invention is to provide means whereby the dust-ladenair-currents upon entering the separator are caused to travel around thesame, thus being relieved of the heavier particles of dust, which fallto the bottom and escape, while the currents upon nearing the center ofthe separator are deflected and caused to reverse their direction,through which action they are freed of their light particles, theair-currents finally escaping through the top of the separatorthoroughly purified. By my method and means the separation is gradualand without a great amount of pressure, the particles being removedaccording to their size, the larger being first dropped, the mediumnext, and the light last. Thus it is evident that the particles willbetreated independently yet continuously and that the separation will becomplete, and,'fur ther, that the air will emerge from the separatorthoroughly purified.

Another feature resides in the fact that the pressure near the bottom ofthe separator is reduced and the particles are allowed a gradual fall.Still another novelty lies ina cap placed over the air-escape, wherebyback pressure is prevented and the interior of the separator protected.

Finally, the object of the invention is to provide a device of thecharacter described that will be strong, durable, and efficient and onethat will be comparatively inexpensive and simple to construct and alsoone in which the working parts will not be liable to get out of order.

With the above and other objects in view the invention consists in thenovel details of construction and operation herein set forth, apreferable embodiment of which is described in the specification andillustrated in the drawings, wherein- Figure 1 is a view in elevation,showing the side of the spout. Fig. 2 is a transverse sectional viewtaken on the line 2 2 of Fig. -1. Fig. 3 is a vertical sectional viewtaken on the line 3 3 of Fig. 2, and Fig. 4-. is a view in elevationbroken away to show the deflectors.

In the drawings the numeral 1 designates the casing, which is shaped inthe form of an inverted truncated cone and provided with a conical top2, suitably removably secured to the casing, whereby the interior of thelatter is readily accessible for the purposes of inspection andcleansing. Communicating with the upper portion of the casing is a spout3, suitably connected by a pipe or the like to a fan such as isordinarily employed in the art to which this invention appertains. Thespout is contracted laterally toward its outlet end and formed with aconverging wall 8 and a straight wall 3, arranged tangentially to thewall of the casing, whereby the air-currents are ejected in a narrowvertical stream and caused to closely hug the wall of the casing uponfirst entering the same. The casing l is provided with a ring 4: at itslower end, to which is attached means for removing the particles as theyfall or settle from the air-currents. An air-escape opening 5 is formedin the center of the top 2, over which a conical cap 6, of greaterdiameter than the opening 5, is supported by legs 7, secured upon thetop 2.

Extending downwardly from the under side of the top 2 is adeflector-cone formed in its entirety of a series of overlappingconverging deflectors 8. These deflectors are in the form of elongatedplates and are formed with an intermediate flat portion 9 and curvedends 10 and 11. These deflectors are secured only at their upper ends.The end 10 is curved in an are parallel to the wall of the casing 1,while the end 11 is curved inwardly toward the center of the casing.Thus it will be evident that the air-currents (indicated by the arrows)upon entering the casing will travel around the same in a helical path,thereby gradually drawing toward the deflectors,and that, seeking anoutlet, they will pass between the overlapping portions of the saiddeflectors. This action causes the currents to reverse their directionof travel. The air-currents passing between the overlapping portionsfirst impinge the inner surfaces of the ends 10 and the outer surfacesof the ends 11 and are then guided along the flat portions 9 and finallydirected toward the center of the casing, from which they escape throughthe opening 5 and out from under the cap 6. The space in the center ofthe casing inclosed by the deflectors 8 constitutes a settling-chamberfrom which the lightest of the particles fall.

The cap 6, owing to its conical shape, will shed elements coming incontact therewith and by completely covering the opening 5 will preventany back pressurefrom escaping currents or currents directed toward thetop of thecasing.

The operation from the foregoing is quite clear and is as follows:Dust-laden air-currents entering under pressure through the spout 3 willpass out the end thereof in a narrow stream caused by the straight andconverging walls 3 and 3 and whirl around the casing in a helicalstream. Owing to their helical movement in passing around the casing,the currents are relieved of the heavier particles of dust, which fallagainst the walls thereof and are directed toward the bottom, at whichpoint the pressure is reduced and the particles are allowed to pass outthrough the ring 4. The currents seeking an outlet are drawn toward thedeflectors 8. It is to be understood that during the helical movement ofthe currents the dust particles undergo a gradual reduction and when thesaid currents impinge against the deflectors 8 only the light particlesremain unseparated. Upon impinging the deflectors the currents will passbetween the outer surfaces of the ends 11 and the inner surfaces of theends 10 of the overlapping portions, thereby being reversed in theirdirection or line of travel, and thence directed or deflected toward thecenter of the casing bythe flat portions 9 and the ends 11. This reverseaction causes the light particles to become detached from the currentsand settle or fall to the bottom of the casing and pass out, theair-currents escaping through the opening 5 and out from under the cap 6in a purified state.

It Will be evident that the specific gravity of the dust particles beinggreater than that of the air-currents the particles are carried by themomentum of the currents, which is gradually reduced toward thereversing-point, thus allowing the particles to fall or settle graduallyas their weight overcomes the momentum of the currents.

The light particles having a specific gravity only slightly greater thanthat of the air-currents, it is necessary to check the momentum of thecurrents. This is accomplished by the reverse action, which practicallymomentarily stops the currents completely, thereby per- (rinitting thesaid particles of dust to settle or rop.

From the above it will be seen that a continuous separation ismaintained and that the particles are removed expeditiously and withoutany great checking of the flow of the currents.

I do not wish to limit myself to the exact details of construction andoperation herein set forth, as I may make various changes in the samewithout departing from the spirit of g my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

In a dust-separator, an inverted conical casing having a dust-outlet atits bottom and a conical top having an air-escape opening, a

contracted spout arranged tangentially to the casing, an inverted,truncated,conical deflector projecting downwardly from the top of thecasing and arranged concentrically to the airescape opening, comprisingoverlapping, converging, curved wings, and a cap supported upon the topover the air-escape opening, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES MOVEETY.

Witnesses:

VVINFIELD S. SHEARD, A. AUSTIN BUZBY.

